Image Resizer Thumbnail Generator a.k.a IRTG. Some of the main features include, but not limited to: 1. Resize Images / Generate Thumbnails: 2. Special Effects: 3. Watermark 4. Transformations 5. Preview 6. Undo 7. Multiple Edits 8. Download 9. Save 10. Showcase 11. Social Share. Image Resizer Thumbnail Generator lets you resize images and generate thumbnails from existing images. Not only that, you can apply Special effects and other techniques to enhance the images and more online, even without needing to use a software.